Summary: On Selection Cooperation in Distributed Networks
Elzbieta Beres, and Raviraj Adve
University of Toronto
10 King's College Road
Toronto, ON M5S 3G4, Canada
Abstract-- We argue for Selection cooperation as an alternative
to Distributed Space-Time Block Coded (DSTBC) transmissions
and other Maximal Ratio Combining (MRC)-based schemes in
cooperative wireless systems. While MRC is optimal in traditional
receive diversity schemes, we show that in distributed networks,
where transmitting nodes have a power, Selection cooperation
outperforms MRC-based protocols. We present two different
relay selection schemes based on available centralization and
computing power and show that even the simplest selection
scheme outperforms DSTBC in terms of outage probability.
I. INTRODUCTION
In distributed wireless systems, cooperative diversity and
relaying can harness the advantages of multiple antennas
without using multiple antennas on receivers and transmitters.
For practical distributed networks this is motivated by the need